/**
 * Copyright (c) 2010, Todd Ginsberg
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *    * Neither the name of Todd Ginsberg, or Gowalla nor the
 *      names of any contributors may be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 *  Also, please use this for Good and not Evil.  
 */
package com.ginsberg.gowalla.auth;

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

import com.ginsberg.gowalla.rate.RateLimiter;
import com.ginsberg.gowalla.rate.RequestsOverTime;
import com.ginsberg.gowalla.request.RequestHeader;
import com.ginsberg.gowalla.request.RequestParameter;
import com.ginsberg.gowalla.request.StringRequestParameter;

/**
 * Implementation of the Authentication interface to support
 * OAuth2 with Gowalla.
 * 
 * @author Todd Ginsberg
 */
public class OAuth2Authentication implements Authentication {

	private List<RequestParameter> parameters = new LinkedList<RequestParameter>();
	
	/**
	 * Constructor!
	 */
	public OAuth2Authentication(final String authToken) {
		if(authToken != null) {
			parameters.add(new StringRequestParameter("oauth_token", authToken));
		}
	}

	/**
	 * @see com.ginsberg.gowalla.auth.Authentication#getHeaders()
	 */
	@Override
	public List<RequestHeader> getHeaders() {
		return Collections.emptyList();
	}

	/**
	 * @see com.ginsberg.gowalla.auth.Authentication#getParameters()
	 */
	@Override
	public List<RequestParameter> getParameters() {
		return parameters;
	}

	/**
	 * @see com.ginsberg.gowalla.auth.Authentication#requiresSecure()
	 */
	@Override
	public boolean requiresSecure() {
		return true;
	}

}
